Our Providers

Dr. Janz received her Bachelor of Science degree from the University of Wisconsin-Madison and her Doctor of Medicine degree from the Medical College of Wisconsin. She completed her residency in Obstetrics and Gynecology at the Medical College of Wisconsin in Milwaukee. She is board-certified and a Fellow of the American College of Obstetricians and Gynecologists.

Dr. Janz is married with two children. She enjoys running, traveling and spending time with friends and family.

Dr. Janz sees patients in Waukesha and Sussex.

Dr. Herzberg is certified by the American Board of Obstetrics and Gynecology. She received her Bachelor of Science degree at Marquette University and her Doctor of Medicine from the Medical College of Wisconsin. She completed her residency in Obstetrics and Gynecology at the University of Cincinnati College of Medicine in Ohio.

Dr. Gregory received his B.A. in Biology and Chemistry from Drury University in Springfield, Missouri. He graduated from Saint Louis University School of Medicine and completed residency training in Obstetrics and Gynecology at the Medical College of Wisconsin.

He is board-certified and a Fellow of the American College of Obstetricians and Gynecologists. He is a member of the Wisconsin Medical Society and the Waukesha Medical Society.

In his free time, he loves to explore new things. He loves visiting new places and meeting new people. He’s also an adventuresome quasi-foodie; it doesn’t have to be fancy as long as it’s different or unique. Ultimately, life is about experiences, and you may miss out if you stick to your old standards.

Dr. Gregory sees patients at our Waukesha and Mukwonago locations.

Dr. Dyoco is a California native who received her Bachelor of Science in Biology at Santa Clara University in Santa Clara, California. She obtained her Doctor of Medicine degree at Creighton University in Omaha, Nebraska, and completed her residency in Obstetrics and Gynecology at the Medical College of Wisconsin in Milwaukee.

She is board-certified as a Fellow of the American College of Obstetricians and Gynecologists, a member of the Wisconsin Medical Society, and the American Institute of Ultrasound in Medicine. She is also certified by the North American Menopause Society (NAMS).

Dr. Dyoco enjoys running, reading, and traveling. She loves to spoil her nieces and nephews.

Dr. Dyoco sees patients at our Waukesha and Oconomowoc locations.